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DURAN® Laboratory bottle with DIN thread, GL 45, 1000ml

Company: DWK Life Sciences
Catalog#: 21 801 54 5
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Fabrication and Use of the Dual-Flow-RootChip for the Imaging of Arabidopsis Roots in Asymmetric Microenvironments
Author:
Date:
2018-09-20
[Abstract]  This protocol provides a detailed description of how to fabricate and use the dual-flow-RootChip (dfRootChip), a novel microfluidic platform for investigating root nutrition, root-microbe interactions and signaling and development in controlled asymmetric conditions. The dfRootChip was developed primarily to investigate how plants roots interact with their environment by simulating environmental heterogeneity. The goal of this protocol is to provide a detailed resource for researchers in the biological sciences wishing to employ the dfRootChip in particular, or microfluidic devices in general, in their laboratory. [摘要]  该协议提供了如何制造和使用双流RootChip(dfRootChip)的详细描述,这是一种新型微流体平台,用于研究根管营养,根 - 微生物相互作用以及受控不对称条件下的信号传导和发育。 dfRootChip的开发主要是为了研究植物根系如何通过模拟环境异质性与环境相互作用。 该协议的目标是为希望在其实验室中特别使用dfRootChip或一般微流体装置的生物科学研究人员提供详细资源。

【背景】地下条件是高度异质和动态的,因此植物根部暴露于各种刺激,因此必须适应这种复杂的环境。尽管这些发展适应的重要性,但潜在的机制仍有待阐明。微流体装置已被证明可用于在受控的微环境中培养标本,并有助于从亚细胞到有机物水平的动态过程的实时成像(Crane 等人,,2010)。由于微流体可以以受控方式操纵小流体体积,以高通量进行实验,提取定量信息并进行延时测量,微流体装置已经进入了有机体研究。对于模式植物拟南芥,已经开发了一系列微流体装置,能够在根发育过程中监测基因表达(Busch et al。,2012),信号事件(Keinath et al。,2015)和基于传感器的营养摄取成像(Grossmann et al。,2011; Lanquar et al。, 2014)。此外,使用微流体平台的最新进展包括高分辨率表型分析(Jiang et al。,2014; Xing ...

Determination of Polyhydroxybutyrate (PHB) Content in Ralstonia eutropha Using Gas Chromatography and Nile Red Staining
Author:
Date:
2018-03-05
[Abstract]  Ralstonia eutropha H16 produces and mobilizes (re-utilizes) intracellular polyhydroxybutyrate (PHB) granules during growth. This protocol describes the visualization of intracellular Nile red stained PHB granules and the quantification of PHB by gas chromatography. Our first method describes how to analyze PHB granules by fluorescence microscopy qualitatively. Our second approach enables the conversion of PHB to volatile hydroxycarboxylic acid methyl esters by acidic methanolysis and their quantification by gas chromatography. Through this method, it is possible to obtain an absolute quantification of PHB, e.g., per cell dry weight. [摘要]  在生长过程中,富养罗尔斯通氏菌H16产生和动员(重新利用)细胞内聚羟基丁酸酯(PHB)颗粒。 该协议描述了细胞内尼罗红染色的PHB颗粒的可视化和通过气相色谱定量PHB。 我们的第一种方法描述了如何通过荧光显微镜定性分析PHB颗粒。 我们的第二种方法可以通过酸性甲醇分解和气相色谱定量法将PHB转化为挥发性羟基羧酸甲酯。 通过该方法,可以获得PHB的绝对定量,例如,每细胞干重。

【背景】聚羟基脂肪酸酯(PHA),尤其是聚羟基丁酸酯(PHB),是许多原核生物物种中的能量和碳储存化合物,确保细菌在压力条件下存活(Anderson和Dawes,1990;Pötter和Steinbüchel,2006; Jendrossek和Pfeiffer,2014; Bresan, >等。,2016)。这些生物聚合物的工业应用是生物降解塑料的生产(Chen,2009; Riedel等人,2015)和潜在药物成分的研究(Wu,2009; Zonari等人, ,2015; Pacheco et al。,2015; Giretova ...

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